TM 262
7-6 Revised 4/11/08
Intensity Levels
125 Hz -10 to 50 dB HL
500 to 6000 Hz-10 to 90 dB HL
250 and 8000 Hz-10 to 70 dB HL
NOTE: An additional +10 dB is available per frequency via
the +10 dB pushbutton.
Accuracy: 125 to 4000 Hz ±3 dB
6000 and 8000 Hz ±5 dB
Step Size: 5 dB
Signal-to-Noise Ratio: > 70 dB in 1/3 octave; less than -10 dB HL for levels less than
60 dB HL
Rise/Fall Time: 20 to 50 msec
Tone Format: Tone is normally off until present bar is depressed.
Continuous Steady when present bar is depressed
Pulsed 2.5/sec (i.e., 200 msec ON, 200 msec OFF)
FM (frequency modulated) 5 Hz, ±5%
Transducers
IPSI: Welch Allyn design
Audiometric Headset:
Pair TDH-39 earphones with MX41AR cushions
(60 ohms impedance)
Headband force per ANSI S3.6 and IEC 645 (4.5 ±0.5)N
(Model No. 26230, No. 26230-RS, No. 26235, No. 26235-RS
only - marked “Version 4”)
Printer
Paper Roll Length: Approximately 80 feet (960")
Tests/Roll:
Versions 1 and 2: Approximately 420 Tymps/Reflex or 210 people
Versions 3 and 4: Approximately 230 tests or 115 people
Assumption: 2 Tymps/Reflex + 1 Audiogram per person)
Speed: Approximately 1.5 minutes to print three screens:
Tympanogram
Tympanogram + reflex (4)
Audiogram
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